Brush-making machine.



0. M. DAMM & H. WOBBE, JR.

BRUSH MAKING MACHINE.

APPLICATION FILED 05c. 18. 1917.

2 SHEETS-SHEET l.

Patented Sept. 17, 1918..

. [7104mm dam/fit 157mm,

0. M. DAMM & H. W OBBE, JR.

BRUSH MAKING MACHINE.

APPLICATION FILED 05c. 18. 1911.

2 $HEETS'SHEET 2.

rm: NDRRIS PETERS cowrnow-uma. WASHINGTON nv c.

UNITED s'rn rns PATENT orrron...

OSCAR M. DAMM AND H RMAN WOBBE, are, or sit. LOUIS, ivrrssoonit. 1

BRUSH-MAKING MACHINE.

souri, have invented a certain new and useful Improvement in Brush-Making Machines, of which'the following is a full, clear, and exact description, such as will enable others skilled in the art to which fit appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specificatlon.

Our invention relates to brush making machlnery and more particularly to amachine for making the type. of rotary brush which is disclosedin ourcopending patent application filed Dec. 18, 1917, Serial Number207,665, the principal object of our invention being to provide a comparatively simple and easily operated -machine which can be used for effectively and economically placing the flexible members of a rotary brush upon the periphery of the substantially cylindrical brush body.

A further ob'ect of our invention is to provide a comparatively simple machine which will be effective in materially reducing the time and labor ordinarily involvedin the production of rotary or circular brushes.

With the foregoing and other objects in" view, our invention consists in certain novel features of construction .and arrangement of parts, hereinafter more fully described and claimed, and illustrated in the acco-m-' panying'drawings, in which- Figure'l is a elevational view of a brush maln'ng machine of our improved construction, parts thereof being broken away.

Fig. 2 is a perspective view of parts'of our improved machine, saidparts serving as a support for the bristles or flexible mem-- bers of the brush. Y

Fig. 3 is" an enlarged vertical section taken approximately" on the line 3+3 of Fig. '1. r

Fig. 4 is a plan view of the rear endof the bristle'supporting frame of themachine'.

Fig. 5 is a detail section of the bristle supporting frame with a layer'of bristles or the like positioned thereupon. 'Fig. 6is a detail section similar to Fig. 5

and showing the bristles forced downwardly into the supporting frame.

,Fig. 7 isa sectional viewrofthe bristle Specification of Letters Patent.

Patented Sept. 17,1918. Application filed December 18, 1917; Serial No. 207,664. 7 I

supporting frame with bristles positioned:

therein, and said frame in position to be placed in the machine. 7.

Referring by numerals to the accompanylng drawings which illustrate a practical embodiment of our improved machine, 10 designates a suitable table, the same being supported in any suitable manner in a horizontal position, and formed in the top of said table is a longitudinally disposed groove 11. Positioned on the sidesof the machine near the center thereof arev upformed in bearing 14 is a pin 19, the inner.

end of which is normally positioned in the.

groove 18. The shaft 16 is adapted to receive the head or body A. of a rotary brush,

said body being preferably of the type dis closed in my above mentioned application.

Removably positioned on the table 10 and adapted to slide in the groove 11 thereon is the frame which supports the bristles or like flexible members which are secured to the brush body A, said frame including a pair of rails 20 and 21, the same being spacedta slight distance apart and occupy ing the same horizontal plane.

"Secured to the inner edge of rail 20 and depending therefrom is a vertically disposed rail 22 and secured to the underside of rail 21 at the inner edge thereof is an angle bar 23, the vertical fiangeof which lies parallel with rail 22. Theends 23 of this angle bar are" bent at right angles to the .body thereof; and .saidbent ends-are secured to the ends of rail 22. See Fig.4).

The rear endof rail 20 is extended a short distance beyondthe corresponding end ofrail 21 and positioned on said extended-end is a block 20 above which is positioned a pivotally mounted eccentric disk 20", the same being provided with an operating handle 20.

Adapted to be positioned in the space between the rails 20 and v21 .andzrail 22 and the .vertical leg ofangle bar 23 is a rail 24, preferably of metal, and formed in one of V :75. Removably positioned in an aperture,

the edges thereof isa groove 25. Fulcrumed on top of the table 10 to one side of the groove 11 therein is a lever 26 and journaled lth'ereup on is a roller 27 which 11012 mally bears directly upon rail 20 when the.

bristle supporting frame is positioned on the table 10. 1

Secured to the end of the lever 26 opposite to the fulcrumed end is the upper end of a rod 28, the lower end of which is connected to a pedal or the like. V

When our improved machine is used for applying bristles or the like to a substantially cylindrical brush body such as A, the bristle supporting frame comprising the rails 20 and 21 and associated parts is removed from the table 10v and turned upside down or with said rails 20 and 21 uppermost.

A layer of bristles, hair, fiber or the like is now positioned on top of rails 20 and 21, as illustrated in Fig. 2, after which a suitable adhesive such as rubber cement is now placed on the central portion of said layer of bristles. (See Fig. 5).

The grooved edge of rail 2% is now laid and bristles iscontinued until the edge ofs'aid rail and the central portions of the bristles project beyond the outer edges of rail 22 and vertical flange of angle 23, after which the frame is inverted and a suitable adhesive, such as rubber cement, is applied to the projecting portion of the row of bristles. (See Fig. 7

A flexible member such as a wire B is now threaded through the groove 25 and the rear end of said flexible member is clamped between the eccentric disk 20 and block 20. The bristle supporting frame is now positioned on table 10 with the rails 20 and 21 occupying the groove 11, and the forward end of flexible member B or the end opposite the end which is clamped to block 20 is secured to brush body A at one 'end of the groove in the periphery thereof.

Shaft 16 is now rotated by'prop er manipu-' lation of crank handle 17 and as this movement takes place, the shaft andhead A mounted thereon are moved laterally owing to the engagement of the inner end of pin 19 in groove 18.

As rotary motion is thus imparted to brush body A, the wire over which the bristles aredoubled will be wound into the groove on said body, and thus the doubled ends of said bristles will be seated in said groove where they will be securely held by the retainingv member or wire Band the filled, the end of the flexible member B' is released from parts 20 and 20 and said' end is secured to body A in any suitable manner. f Y r In the event that the bristle holding frame slides too freely through groove 11,'the operator can move rod 28 downwardly, thereby causing roller 27 to engagewith pressure on rail 20, and this will create fr ctlon to cause the frame to move more slowly, thereby in surin the seatin of the retainin member B and doubled ends of the bristles in the groove in brush body A.

After the bristles or flexible member have been applied to body A, the shaft16'is removed from its bearings and said body is removed fromthe shaft.

A machine of our improved construction is comparatively simple, can be easily operated, and is effective in saving much time, labor andconsequent expense in the manufacture of rotary brushes. P

It will be readily understood that minor changes in the size, form and construction of the various parts'of our improved machine may be made and substituted for thoseherein shown-and described-without departiing from the spirit of our invention, the scope of which is set forth in the appended claims.

\Ve claim:

1. In a brush making machine, a support,

a shaft journaled for rotation above said support and adaptedto carrythe brush body, a member arranged for sliding movement on the support and adapted to support th bristle carrying flexible member which is applied "to said brush body,and means at the rear end of said sliding member for securing one end of the flexible member,

2. In a brush making machine, a support, a shaft journaled for rotation above said support and adapted to carry the brush body, a. member arranged for sliding movement on the support and adapted to support the bristle carrying flexible member which is applied to said brush body, and means for applying pressure to the slidable'member to retard its movement on the support toward the shaft. J I

3. In a brush making machine, a support, a shaft journaled for rotation above-said support and adapted to carry the v brush body, means for moving the shaft lengthwise during its rotary movement, a member arranged for sliding movement on the support and adapted to support the bristle carrying flexible member which is appliedto said brush body, and means at the rear end of said sliding member for securing one end of said flexible member.

l. In a brush making machine of the class described, a pair of spaced supports for the flexible elements of a brush, and a rail adapted to be inserted between said spaced supports for bending the flexible elements double, said rail being provided in one of its edges with a groove adapted to receive a flexible member which retains th flexible elements on the brush body to which said member and elements are applied.

5. In a brush making machine, a support a shaft mounted for rotary'and lengthwise movement above said support and adapted to carry the brush body, a member arranged for sliding movement upon said support, which member comprises a pair of spaced supports, a grooved rail adapted to be positioned between said supports, and a clamp on the rear end of said sliding member.

6. In a brush making machine, a table, a shaft jo-urnaled above said table and adapted to receive the brush body, a frame arranged for sliding movement on the table for bolding the flexible members which are applied to the brush body, said'frame comprising a pair of spaced supports, a grooved rail adapted to be positioned between said supports, and a clamp on the rear end of said frame.

spaced supports, and a clampl on the rear end of said sliding member, an means for applying variable pressure to the slidable member during its movement on the table toward the shaft.

8. In a machine of the class described, a table, and a frame arranged for sliding movement on said table, which frame is provided. with an elongated longitudinally disposed slot, which is adapted to receive flexible brush'elements, a grooved rail adapted 'to be positioned in said slot to grip the brush elements therein, the groove in said rail being adapted to receive a flexible member which retains the flexible elements on the brush body to which they are applied, and means on the rear end of said sliding frame for gripping the end of said flexible member.

In testimony whereof We hereunto aflix' our signatures, this 13 day of December, 1917.

OSCAR M. DAMM. HERMAN WOBBE, JR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

